/Engine/Source/Runtime/Engine/Classes/Materials/MaterialInstanceDynamic.h
Set an MID vector parameter value, using MPI (to allow access to layer parameters)
void SetVectorParameterValueByInfo ( const [FMaterialParameterInfo](API\Runtime\Engine\FMaterialParameterInfo) & ParameterInfo, [FLinearColor](API\Runtime\Core\Math\FLinearColor) Value )